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Profile Name IDH1 R132C
Gene Variant Detail

IDH1 R132C (gain of function)

Relevant Treatment Approaches IDH Inhibitor (Pan) IDH1 Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
IDH1 R132C high grade glioma sensitive IDH1 Inhibitor AGI-5198 Preclinical Actionable In a preclinical study, AGI-5198 inhibited growth and promoted differentiation in glioma cells expressing IDH1 R132C (PMID: 23558169). 23558169
IDH1 R132C intrahepatic cholangiocarcinoma sensitive Saracatinib Preclinical Actionable In a preclinical study, intrahepatic cholangiocarcinoma cells harboring IDH1 R132C demonstrated increased sensitivity to Saracatinib (AZD0530) induced growth inhibition compared to IDH1 wild-type cells in culture (PMID: 27231123). 27231123
IDH1 R132C intrahepatic cholangiocarcinoma sensitive Dasatinib Preclinical Actionable In a preclinical study, Sprycel (dasatinib) inhibited growth of intrahepatic cholangiocarcinoma cells harboring IDH1 R132C in culture, and suppressed tumor growth in PDX models (PMID: 27231123). 27231123
IDH1 R132C high grade glioma sensitive Talazoparib Preclinical - Patient cell culture Actionable In a preclinical study, patient-derived glioma cells harboring IDH1 R132C demonstrated increased sensitivity to Talzenna (talazoparib)-induced growth inhibition in culture (PMID: 28148839). 28148839
IDH1 R132C sarcoma sensitive Olaparib Preclinical - Cell line xenograft Actionable In a preclinical study, Lynparza (olaparib) treatment delayed tumor growth in cell line xenograft models of sarcoma harboring IDH1 R132C (PMID: 28148839). 28148839
IDH1 R132C sarcoma decreased response IDH1 Inhibitor AGI-5198 + Talazoparib Preclinical - Cell culture Actionable In a preclinical study, AGI-5198 reverted the sensitivity of sarcoma cells harboring IDH1 R132C to Talzenna (talazoparib)-induced growth inhibition in culture (PMID: 28148839). 28148839
IDH1 R132C sarcoma decreased response IDH1 Inhibitor AGI-5198 + Olaparib Preclinical - Cell culture Actionable In a preclinical study, AGI-5198 reverted the sensitivity of sarcoma cells harboring IDH1 R132C to Lynparza (olaparib)-induced growth inhibition in culture (PMID: 28148839). 28148839
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor BAY1436032 Preclinical - Pdx & cell culture Actionable In a preclinical study, BAY1436032 decreased R-2HG levels and inhibited growth of primary acute myeloid leukemia (AML) cells harboring IDH1 R132C in culture, and decreased blast number and increased survival of two AML patient-derived xenograft (PDX) models, one which harbored additional alterations in FLT3, NPM1, and NRAS and one which harbored a KMT2A (MLL) alteration (PMID: 28232670). 28232670
IDH1 R132C fibrosarcoma predicted - sensitive IDH Inhibitor (Pan) Vorasidenib Preclinical - Cell line xenograft Actionable In a preclinical study, AG-881 treatment decreased tumor 2HG levels in a fibrosarcoma cell line xenograft model harboring IDH1 R132C (Mol Cancer Ther Jan 1 2018 (17) (1 Supp) B126). detail...
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase I trial that supported FDA approval, Tibsovo (ivosidenib) treatment resulted in complete remission (CR) in 21.6% (27/125), CR with partial hematological recovery (CRh) in 8.8% (11/125), and overall response (OR) in 41.6% (52/125) of patients with relapsed or refractory acute myeloid leukemia harboring a susceptible IDH1 mutation (R132C/G/H/L/S) as detected by an FDA-approved test (PMID: 29860938; NCT02074839). detail... detail... detail... 29860938
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase I trial that supported FDA approval, Tibsovo (ivosidenib) treatment resulted in complete remission (CR) in 28.6% (8/28), CR with partial hematological recovery (CRh) in 14.3% (4/28) of patients age 75 or older with untreated acute myeloid leukemia harboring a susceptible IDH1 mutation (R132C/G/H/L/S) as detected by an FDA-approved test, with a median treatment duration of 4.3 months (PMID: 29860938; NCT02074839). detail... 29860938 detail...
IDH1 R132C chondrosarcoma predicted - sensitive IDH1 Inhibitor Ivosidenib Case Reports/Case Series Actionable In a Phase I trial, Tibsovo (ivosidenib) treatment was tolerated, substantially decreased plasma 2-HG levels, and resulted in a median progression-free survival of 5.6 months and stable disease in 52% (11/21) of patients with chondrosarcoma harboring IDH1 mutations, including IDH1 R132C (n=13) (PMID: 32208957; NCT02073994). 32208957
IDH1 R132C cholangiocarcinoma sensitive IDH1 Inhibitor Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase III (ClarIDHy) trial that supported FDA approval, Tibsovo (ivosidenib) treatment significantly improved median progression-free survival (2.7 vs 1.4 mo, HR=0.37, p<0.001) and prolonged median overall survival (10.8 vs 9.7 mo, HR=0.69, p=0.06) compared to placebo in patients with advanced cholangiocarcinoma harboring IDH1 mutations including R132C/H/L/G/S, resulted in favorable objective response rate (2%, 3/124 vs 0%, 0/61) and stable disease rate (51% vs 28%) (PMID: 32416072; NCT02989857). detail... detail... 32416072
IDH1 R132C Advanced Solid Tumor predicted - sensitive IDH1 Inhibitor DS-1001b Preclinical - Biochemical Actionable In a preclinical study, DS-1001b inhibited IDH1 R132C enzymatic activity in an in vitro assay, and inhibited production of the oncometabolite 2-hydroxyglutarate (2-HG) in transformed human cells expressing IDH1 R132C in culture (PMID: 31727689). 31727689
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor Azacitidine + Ivosidenib Phase Ib/II Actionable In a Phase Ib trial, Tibsovo (ivosidenib) and Vidaza (azacitidine) combination treatment demonstrated a favorable safety profile and resulted in an objective response rate (ORR) of 78.3% (18/23, 14 complete remission) and a 12-month overall survival probability of 82% in patients with newly diagnosed acute myeloid leukemia harboring IDH1 R132C (n=14), R132H (n=4), or R132L (n=3) mutations (PMID: 33119479; NCT02677922). 33119479
IDH1 R132C leukemia sensitive TETi76 Preclinical - Cell culture Actionable In a preclinical study, TETi76 treatment decreased viability of a leukemia cell line expressing IDH1 R132C in culture (PMID: 33681816). 33681816
IDH1 R132C chondrosarcoma predicted - sensitive Olaparib Case Reports/Case Series Actionable In a Phase II trial (OLAPCO), Lynparza (olaparib) treatment resulted in a partial response with 59% tumor reduction lasting 14 months in one patient and stable disease lasting 7.5 months in one patient out of four patients with chondrosarcoma harboring IDH1 R132C (PMID: 34994649, NCT02576444). 34994649
IDH1 R132C fibrosarcoma sensitive Ceralasertib + Olaparib Preclinical - Cell line xenograft Actionable In a preclinical study, the combination of Lynparza (olaparib) and Ceralasertib (AZD6738) resulted in a greater delay in tumor growth compared to Ceralasertib (AZD6738) alone in fibrosarcoma cell line xenograft models harboring IDH1 R132C (PMID: 34027408). 34027408
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor Azacitidine + Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase III trial (AGILE) that supported FDA approval, Tibsovo (ivosidenib) and Vidaza (azacitidine) combination therapy significantly improved event-free survival (HR 0.33, p=0.002) and median overall survival (24.0 vs 7.9 mo, HR 0.44, p=0.001) compared to Vidaza (azacitidine) plus placebo in patients with newly diagnosed acute myeloid leukemia harboring IDH1 mutations including R132C/H/G/L/S (PMID: 35443108; NCT03173248). 35443108 detail... detail...
IDH1 R132C acute myeloid leukemia sensitive IDH1 Inhibitor Olutasidenib FDA approved - On Companion Diagnostic Actionable In a Phase II trial (Study 2102-HEM-101) that supported FDA approval, Rezlidhia (olutasidenib) treatment resulted in an objective response rate of 46% (57/123, 37 complete remission (CR), 4 CR with partial hematologic recovery, 14 CR with incomplete recovery, 1 morphologic leukemia-free state, 1 partial response) in patients with relapsed/refractory acute myeloid leukemia harboring a susceptible IDH1 mutation (R132C/G/H/L/S) (J Clin Oncol 39, no. 15_suppl (May 20, 2021) 7006; NCT02719574). detail... detail... detail...
IDH1 R132C intrahepatic cholangiocarcinoma sensitive Olaparib + Radiotherapy Preclinical - Cell culture Actionable In a preclinical study, treatment with Lynparza (olaparib) enhanced the sensitivity of an intrahepatic cholangiocarcinoma cell line harboring IDH1 R132C to radiation therapy in culture, resulting in decreased survival compared to radiation therapy alone (PMID: 32494639). 32494639
IDH1 R132C cholangiocarcinoma no benefit Olaparib Preclinical - Pdx & cell culture Actionable In a preclinical study, cholangiocarcinoma patient-derived xenograft (PDX) cell lines harboring IDH1 R132C were insensitive to Lynparza (olaparib) in culture and did not inhibit tumor growth in the patient-derived xenograft (PDX) model (PMID: 36374558). 36374558
IDH1 R132C cholangiocarcinoma no benefit Pamiparib Preclinical - Pdx & cell culture Actionable In a preclinical study, cholangiocarcinoma patient-derived xenograft (PDX) cell lines harboring IDH1 R132C were insensitive to Pamiparib (BGB-290) in culture and did not inhibit tumor growth in the patient-derived xenograft (PDX) model (PMID: 36374558). 36374558
IDH1 R132C cholangiocarcinoma no benefit Niraparib Preclinical - Patient cell culture Actionable In a preclinical study, cholangiocarcinoma patient-derived xenograft (PDX) cell lines harboring IDH1 R132C were insensitive to Zejula (niraparib) in culture (PMID: 36374558). 36374558
IDH1 R132C myelodysplastic syndrome sensitive IDH1 Inhibitor Ivosidenib FDA approved - On Companion Diagnostic Actionable In a Phase I trial that supported FDA approval, Tibsovo (ivosidenib) was tolerated and resulted in a complete response (CR) in 44% (7/16), partial response (PR) in 6% (1/16), and marrow CR in 31% (5/16) of patients with relapsed or refractory myelodysplastic syndrome harboring a susceptible IDH1 mutation (R132C/G/H/L/S) as detected by an FDA-approved test, with a hematologic improvement in >/=1 lineages achieved by 69% (11/16) of patients (J Clin Oncol 40, no. 16_suppl (June 01, 2022) 7053; NCT02074839). detail... detail... detail...